Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
260 FOUS54 KMRX 171156 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 756 AM EDT Sat May 17 2025 TNZ017-172000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 756 AM EDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 80 57 79 57 79 Temp 64 71 78 80 74 65 61 58 59 69 76 78 74 64 60 58 60 70 76 76 73 Dewpt 63 64 58 56 54 53 54 54 56 57 57 56 58 58 57 56 58 61 62 63 63 RH 97 79 50 44 50 65 78 86 90 66 52 47 57 81 90 93 93 73 62 64 71 Wind Dir SW SW W W W W W SW SW W W W W W E NE E SW W W SW Wind Spd 10 13 18 19 12 8 5 4 4 8 11 10 5 1 0 1 1 2 5 4 2 Wind Gust 24 29 29 23 Clouds B2 SC FW FW FW FW SC B1 SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 PoP 12hr 10 0 10 5 50 QPF 12hr 0 0 0 0 0.07 Rain Rain shwrs C C C C S Tstms S C C S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 79 63 75 53 65 47 67 Temp 63 63 76 73 65 65 73 67 57 53 60 59 50 50 63 61 Dewpt 61 62 66 64 63 64 63 56 54 51 49 46 46 46 46 48 PWind Dir E SW S W W W W W Wind Char LT LT LT GN GN GN LT GN Avg Clouds B1 B2 B2 B1 B2 B2 B2 SC B1 B1 B1 B1 SC SC SC SC PoP 12hr 40 70 80 80 70 40 30 20 Rain shwrs S C C L L D L D L L C C C C S S Tstms S C S C L S C S $$ TNZ071-172000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 756 AM EDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 62 81 63 81 Temp 66 75 81 83 77 69 65 63 64 74 79 81 77 69 66 64 65 73 77 78 76 Dewpt 65 66 61 59 59 58 59 58 59 61 62 62 65 64 63 61 62 66 68 68 67 RH 97 74 51 44 54 68 81 84 84 64 56 53 67 84 90 90 90 79 74 71 74 Wind Dir SW SW SW W W SW SW SW SW W W W W E E E E W SW SW SW Wind Spd 11 12 14 14 9 5 3 2 2 2 5 4 2 2 1 1 1 2 3 4 3 Clouds B2 SC FW CL FW FW SC B1 SC SC B1 SC B1 B1 B1 B1 B1 B2 B2 B1 B2 PoP 12hr 10 5 30 20 70 QPF 12hr 0 0 0 0 0.13 Rain shwrs C C S S L L L L S Tstms S C C C C S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 83 66 76 55 67 50 71 Temp 68 67 80 76 70 68 75 68 60 55 63 62 53 52 66 65 Dewpt 65 65 69 68 66 66 63 59 55 51 50 48 48 48 49 50 PWind Dir S SW SW W W NW NW NW Wind Char LT LT LT GN LT GN LT LT Avg Clouds B1 B2 B2 B1 B2 B2 B1 SC B1 B1 B1 SC SC SC SC SC PoP 12hr 30 60 80 70 50 30 20 20 Rain shwrs S C C L D D L L C C C C S S Tstms S C C C C S $$ TNZ036-172000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 756 AM EDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 85 61 82 62 81 Temp 66 76 83 84 78 68 64 62 63 74 80 82 77 68 65 63 64 72 77 78 75 Dewpt 65 66 60 57 58 57 56 57 59 61 61 63 65 64 63 61 62 66 68 68 67 RH 97 71 46 40 50 68 75 84 87 64 52 53 67 87 93 93 93 81 74 71 76 Wind Dir SW SW W W W W SW SW SW SW W W W N NE NE NE S SW SW SW Wind Spd 5 9 11 11 6 4 2 2 1 2 3 3 2 1 1 1 1 2 3 3 2 Wind Gust 16 23 21 17 Clouds B2 SC FW CL FW FW SC B2 SC SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 PoP 12hr 5 5 30 20 70 QPF 12hr 0 0 0.01 0 0.12 Rain shwrs C C S S L L L L S Tstms C C C C C S Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 82 65 76 55 68 49 71 Temp 67 66 79 75 69 67 75 68 59 55 64 62 53 53 68 65 Dewpt 65 65 70 68 67 66 63 59 55 50 49 47 48 48 48 49 PWind Dir NE SW SW W W NW NW NW Wind Char LT LT LT GN LT GN LT LT Avg Clouds B1 B2 B2 B1 B2 B2 B1 SC SC B1 SC SC FW FW SC SC PoP 12hr 40 70 80 70 40 30 20 20 Rain shwrs S C C L D D L L C C C C S S Tstms S C C C C S $$ TNZ099-172000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 756 AM EDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 65 84 66 86 Temp 69 78 85 85 80 71 68 66 67 76 81 83 79 71 68 67 67 76 81 83 79 Dewpt 67 67 61 59 62 62 62 61 63 65 66 66 68 68 67 66 66 70 71 70 70 RH 93 69 45 41 54 73 81 84 87 69 60 57 69 90 97 97 97 82 72 65 74 Wind Dir SW W W W W SW SW S SW SW S SW SW SE N N SE S S SW SW Wind Spd 5 5 9 8 4 2 1 1 1 2 3 3 2 1 0 0 1 2 3 4 2 Wind Gust 18 Clouds B2 SC SC CL FW SC SC OV B2 SC B1 SC SC B1 B1 B2 B2 B2 B2 SC SC PoP 12hr 10 10 50 30 60 QPF 12hr 0 0 0.22 0 0.23 Rain shwrs C C C C S S C C L L L L Tstms S C C S S C L C Heat index 85 87 Max heat 85 87 83 85 85 87 Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 87 68 79 56 71 51 74 Temp 69 69 84 79 70 68 78 71 60 57 67 64 55 54 70 68 Dewpt 68 68 69 68 67 67 64 60 56 51 50 49 49 49 50 52 PWind Dir S SW SW W NW NW NW NW Wind Char LT LT LT GN LT GN LT LT Avg Clouds B1 B2 B1 B1 B1 B2 B1 SC SC SC SC SC FW FW FW SC PoP 12hr 20 50 70 50 20 20 10 10 Rain shwrs S S C L L C C S S S Tstms S S L S $$ NCZ060-172000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 756 AM EDT Sat May 17 2025 Date Sat 05/17/25 Sun 05/18/25 Mon 05/19/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 58 81 59 83 Temp 64 71 80 81 74 66 62 60 61 72 78 80 75 66 63 61 62 73 78 80 75 Dewpt 63 65 57 55 56 56 56 56 58 60 59 59 62 62 60 60 61 65 65 66 65 RH 97 81 45 41 53 70 81 87 90 66 52 49 64 87 90 97 97 76 64 62 71 Min/Max RH 40 93 49 97 62 Wind Dir W W W W W W SW SE E W W W W N N N N SW SW W W Wind Dir Deg 25 26 26 27 26 26 23 12 11 28 28 24 28 0 0 0 0 23 23 24 24 Wind Spd 5 5 9 9 4 2 1 1 1 2 3 3 2 0 0 0 0 2 3 3 2 Wind Gust 16 19 19 Clouds OV B1 FW CL FW SC SC B1 B1 B1 B1 SC SC B1 B1 B1 B1 B2 B2 B1 B1 Clouds (%) 94 57 18 4 6 33 41 54 53 64 69 44 45 56 52 67 69 71 76 60 60 Vsby 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 PoP 12hr 10 5 40 20 70 QPF 12hr 0 0 0.04 0 0.19 Rain shwrs S S C C S S S S L L L L S Tstms C C S C C C S ChanceThunder 10 5 30 20 50 Max Mix Hgt AGL Mix Hgt 5700 4500 3700 Max Vent Rt 110800 59800 46800 T Wind Dir W W SW T Wind Spd 14 9 9 ADI 96 52 41 Max LVORI 7 6 8 Stability D B A G F B A F F B B Ceiling NONE NONE 23500 NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 27.79 27.81 27.82 27.85 27.86 27.88 27.86 27.85 27.87 27.86 27.81 Date Tue 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 05/23/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 84 63 77 51 67 46 71 Temp 65 65 81 75 67 65 74 68 57 52 62 60 51 49 66 63 Dewpt 63 64 64 64 64 64 60 56 53 50 48 45 45 45 45 46 PWind Dir SE SW SW W NW NW NW NW Wind Char LT LT LT GN LT GN LT LT Avg Clouds B1 B2 B1 B1 B1 B2 B1 SC SC B1 B1 SC SC SC SC SC PoP 12hr 20 50 70 60 30 30 10 10 Rain shwrs S C C L L L L C S C C Tstms S S S C S C This is an experimental product for planning and review purposes only, and is not to be substituted for an official fire weather spot forecast $$